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Updated: September 22, 2024

When searching for boiler installation repair in london, it’s important to evaluate efficiency, reliability, and the level of service support. The main options are combi, system, and conventional boilers. By the end of this blog, you’ll have the knowledge needed to choose the right one.

Combi Boilers vs System Boilers vs Conventional Boilers in London uk

1- Combi Boilers:

  • Description and how they work
  • Advantages (e.g., space-saving, no need for a hot water cylinder)
  • Best suited for (small to medium-sized homes)

A combi boiler is an efficient, compact, and space-saving heating solution that delivers both central heating and hot water on demand. Unlike traditional boilers that need a separate hot water cylinder or tank, a combi boiler heats water directly from the mains when you turn on a tap, providing immediate hot water. They are usually ideal for small to medium-sized homes.

How do combi boilers work?

Combi boilers are linked directly to the mains water supply. When you turn on a hot water tap, a flow sensor in the boiler senses the demand. Cold water from the mains flows through a heat exchanger in the boiler, heated by gas or electricity, and the hot water is then sent straight to the tap or shower. For central heating, the boiler heats water that circulates through radiators or underfloor heating systems.

What are the advantages of combi boilers?

Space-Saving

Combi boilers don’t need a separate hot water cylinder or cold water storage tank, making them perfect for homes with limited space.

Energy Efficient

They are highly efficient as they heat water on demand, minimising the energy wastage associated with storing hot water.

Cost-Effective

Installation and maintenance costs are generally lower for combi boilers than for traditional boiler systems because they have fewer components.

Continuous Hot Water Supply

They offer an unlimited supply of hot water as long as the boiler is operational, eliminating the need to wait for a water tank to heat up.

Pressure

Water is delivered at mains pressure, leading to a more powerful shower and improved overall water pressure in the home.

Quick Installation

Installation is generally quicker and less disruptive than setting up a traditional system with multiple components.

Modern Technology

Many combi boilers are equipped with advanced features like digital controls, programmable timers, and smart home system connectivity.

Reduced Risk of Freezing

Without external tanks or pipes, the risk of freezing in cold weather is minimised.

2- System Boilers:

  • Description and how they workAdvantages
  • (e.g., hot water on demand, suitable for larger homes)
  • Best suited for (homes with multiple bathrooms)

A system boiler, or sealed system boiler, provides heating and hot water directly to radiators and a separate hot water cylinder. Unlike combi boilers, system boilers need a hot water storage cylinder but not a cold-water tank, making them more compact than traditional boilers while still meeting the needs of larger homes with higher hot water demands. They are ideal for larger homes with multiple radiators and bathrooms.

Emergency Boiler Repair

How do system boilers work?

System boilers are connected to the mains water supply and use a heat exchanger to heat water directly from this supply, much like other boiler types. The heated water is then stored in a separate hot water cylinder for later use. For central heating, the boiler heats water that circulates through radiators or underfloor heating systems. System boilers also include built-in components such as pumps and expansion vessels to maintain water pressure and circulation.

What are the advantages of system boilers?

No Need for Cold Water Tank

Unlike conventional boilers, system boilers do not need a separate cold water tank, which saves space and simplifies the installation process.

High Demand for Hot Water

They can deliver hot water to several taps at once without a notable drop in pressure, making them perfect for larger homes with multiple bathrooms.

Fast Installation

Because many components are integrated into the boiler unit, installation is usually quicker and simpler compared to conventional systems.

Efficient and Economical

System boilers are efficient and can be more economical to run, especially in homes with high hot water demands, as they store hot water and deliver it quickly when needed.

Integrated Components

The built-in pump and expansion vessel make the system more compact, reducing the need for additional components and simplifying maintenance and servicing.

Reliable Hot Water Supply

With a hot water cylinder, there is always a reserve of hot water available, which can be advantageous during periods of high demand.

Reduced Risk of Freezing

Since there is no cold water tank in the loft, the risk of water freezing during winter is reduced.

Compatibility with Solar Thermal Systems

System boilers can easily integrate with solar thermal systems, offering an eco-friendly method to heat water and reduce energy costs further.

3- Conventional Boilers:

  • Description and how they work
  • Advantages (e.g., can handle high demand for hot water)
  • Best suited for (homes with traditional heating systems)

A conventional boiler, also referred to as a regular, traditional, or heat-only boiler, provides heating and hot water through a network of components that include a hot water cylinder and a cold-water storage tank, usually located in the loft. This type of boiler is ideal for homes with traditional heating systems and high hot water demands.

How do conventional boilers work?

Cold water from the mains supply is fed into a storage tank, usually located in the loft. This water is then directed into a hot water cylinder, where it is heated by the boiler using a heat exchanger. The heated water is stored in the cylinder and delivered to taps and showers when needed. For central heating, the boiler heats water that circulates through radiators or underfloor systems. The system also includes a pump and controls to manage water flow and temperature.

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What are the advantages of conventional boilers?

  1. High Hot Water Demand

Conventional boilers are ideal for homes with high hot water demand and multiple bathrooms, as they can supply hot water to several outlets simultaneously without a significant drop in pressure.

  1. Compatibility with Older Systems

They are compatible with older heating systems and existing pipework, making them a good choice for homes with traditional radiator systems.

  1. Backup Hot Water

The hot water cylinder provides a backup supply of hot water, which can be useful if the boiler fails or during periods of high demand.

  1. Efficient for Large Properties

They are ideal for larger properties with higher heating and hot water requirements.

  1. Easier Maintenance

The individual components (boiler, hot water cylinder, and cold water tank) are generally easier to maintain and replace separately compared to more integrated systems.

  1. Pressure Management

Conventional systems can handle water pressure efficiently, ensuring consistent performance even in homes with several bathrooms.

  1. Compatibility with Renewable Systems

They can be combined with renewable energy systems like solar thermal panels, helping to lower energy costs and reduce environmental impact.

  1. No Direct Mains Pressure Issues

Since the hot water comes from a tank rather than directly from the mains, there are fewer problems with fluctuating mains water pressure affecting the hot water supply.

How to choose the boiler installation repair in london?

1- Energy Efficiency:

  • Importance of energy-efficient boilers
  • Explanation of energy ratings (A+++ to D)
  • Long-term cost savings

Energy-efficient boilers are essential for cutting your carbon footprint, decreasing energy bills, and meeting environmental regulations. They consume less fuel, which results in cost savings and lower emissions.

A+++ to A: The highest energy efficiency, indicating that the boiler uses fuel very efficiently.

B to D: Lower efficiency, meaning higher fuel consumption and running costs.

Boilers with higher energy ratings offer greater efficiency, resulting in substantial long-term savings and environmental benefits. Investing in an energy-efficient boiler can reduce energy bills over time, balancing out the initial higher purchase cost. Additionally, government incentives and grants may be available for installing high-efficiency boilers.

2- Size and Space Requirements:

  • Assessing the space available for installation
  • Choosing the right size boiler for your home

Assess the space where the boiler will be installed. Combi boilers are compact and suitable for smaller areas, while conventional and system boilers need more space for additional components such as hot water cylinders and cold water tanks.

Combi Boilers: Suitable for smaller homes with limited space and lower hot water demands.

System Boilers: Ideal for medium to large homes with higher hot water needs and space for a hot water cylinder.

Conventional Boilers: Best for larger homes with traditional heating systems and high hot water demands.

3- Heating and Hot Water Requirements:

  • Understanding your household’s needs
  • Matching boiler capacity to usage patterns

Take into account the number of bathrooms, radiators, and your household’s hot water usage patterns. Homes with multiple bathrooms or high hot water demands will require a boiler with a larger capacity.

Small to Medium Homes: A combi or system boiler with an appropriate output (kW) will suffice.

Large Homes: A conventional boiler with a high capacity or a system boiler with a large hot water cylinder may be necessary.

4- Budget Considerations:

  • Price range of different boiler types
  • Balancing upfront costs with long-term savings

Combi Boilers: Typically range from £500 to £2,000.

System Boilers: Generally cost between £1,000 and £3,000.

Conventional Boilers: Prices range from £1,500 to £4,000.

Although high-efficiency boilers might have higher initial costs, they provide substantial savings on energy bills throughout their lifespan. Explore financing options, government grants, and incentives to help reduce the upfront expense.

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Best 10 Boiler brands in London (Reviews)

When selecting a boiler, take into account your home’s size, hot water needs, and budget. Premium brands such as Worcester Bosch and Vaillant deliver high efficiency and reliability, while more affordable options like Glow-worm and Vokèra offer solid performance at a lower cost. Professional installation and regular maintenance are essential for achieving optimal performance and extending the boiler’s lifespan.

1- Worcester Bosch

Models: Greenstar i, Greenstar CDi Compact

Efficiency: High efficiency (A-rated)

Suitable For: Medium to large homes with high hot water demand

Features:

  • User-friendly controls
  • quiet operation
  • excellent customer support

Pros:

  • Highly reliable and efficient
  • Extensive warranty options
  • Excellent customer service

Cons:

  • Higher upfront cost
  • Installation can be more complex

2- Vaillant

Models: ecoTEC Plus, ecoTEC Exclusive

Efficiency: High efficiency (A-rated)

Suitable For: Medium to large homes; eco-conscious homeowners

Features:

  • Advanced technology
  • quiet operation
  • eco-friendly

Pros:

  • Innovative and efficient
  • Good range of models for different needs
  • Excellent build quality

Cons:

  • Premium pricing
  • Slightly higher maintenance costs

3- Ideal Boilers

Models: Logic+ Combi, Vogue Max

Efficiency: High efficiency (A-rated)

Suitable For: Small to medium homes; budget-conscious homeowners

Features:

  • Compact design
  • good warranty options

Pros:

  • Affordable
  • Reliable with good customer reviews
  • Wide availability of parts and service

Cons:

  • Slightly noisier than premium brands
  • Warranty terms can be complex

4- Baxi

Models: Baxi Duo-tec, Baxi 800

Efficiency: High efficiency (A-rated)

Suitable For: Small to medium homes; homes requiring straightforward installation

Features:

  • Easy installation
  • reliable performance

Pros:

  • Good value for money
  • Easy to install and maintain
  • Good warranty options

Cons:

  • Limited high-end features
  • Can be noisy

5- Glow-worm

Models: Glow-worm Energy, Glow-worm Ultimate

Efficiency: High efficiency (A-rated)

Suitable For: Small to medium homes; budget-conscious homeowners

Features:

  • Affordable
  • user-friendly controls

Pros:

  • Cost-effective
  • Reliable and easy to use
  • Good after-sales support

Cons:

  • Limited high-end models
  • Shorter warranty periods

6-Vokèra

Models: Vokèra Easi-Heat, Vokèra Compact

Efficiency: High efficiency (A-rated)

Suitable For: Small homes; budget-conscious homeowners

Features:

  • Cost-effective
  • compact design

Pros:

  • Affordable
  • Easy to install
  • Reliable performance

Cons:

  • Basic features
  • Limited high-end options

7- Ariston

Models: Ariston Clas HE Evo, Ariston Alteas One

Efficiency: High efficiency (A-rated)

Suitable For: Medium to large homes; tech-savvy homeowners

Features:

  • Stylish design
  • smart controls

Pros:

  • Stylish and modern design
  • High efficiency
  • Smart home compatibility

Cons:

  • Higher upfront cost
  • Can be complex to install

8- Ferroli

Models: Ferroli Modena HE, Ferroli Bluehelix Tech

Efficiency: High efficiency (A-rated)

Suitable For: Small homes; budget-conscious homeowners

Features:

  • Compact
  • affordable

Pros:

  • Very compact
  • Affordable
  • Good efficiency

Cons:

  • Less well-known brand
  • Limited availability of parts

9- Alpha

Models: Alpha E-TEC, Alpha Intec C

Efficiency: High efficiency (A-rated)

Suitable For: Small to medium homes; budget-conscious homeowners

Features:

  • Good value for money
  • reliable

Pros:

  • Affordable
  • Reliable performance
  • Good warranty options

Cons:

  • Basic features
  • Can be noisy

10-ATAG

Models: ATAG iC Economiser Plus, ATAG iS System

Efficiency: Very high efficiency (A+++ rated)

Suitable For: Large homes; environmentally conscious homeowners looking for top efficiency

Features:

  • Extremely efficient
  • durable

Pros:

  • Extremely high efficiency
  • Long-lasting and durable
  • Excellent warranty

Cons:

  • High upfront cost
  • Limited availability
Boiler installation in Liverpool

What size boiler do I need in London?

Selecting the correct boiler size for your home is essential for maximising efficiency, comfort, and cost-effectiveness. The boiler size, typically measured in kilowatts (kW), is determined by various factors such as your home’s size, the number of radiators, the number of bathrooms, and your hot water requirements.

  • Small Homes/Apartments: Combi boiler (24-27 kW) or system boiler (9-18 kW)
  • Medium Homes: Combi boiler (28-34 kW) or system boiler (18-26 kW)
  • Large Homes: Combi boiler (35-42 kW) or system boiler (27-40 kW)

It is strongly advised to have a professional heating engineer conduct a heat loss calculation to determine the precise boiler size needed for your home. This calculation considers specific details of your home, such as insulation quality, window types, and other relevant factors.

How much does a boiler installation repair in london?

In London, the cost of a new boiler, including installation, can vary from around £1,500 to £4,000, depending on the type and model of the boiler and the complexity of the installation.

Combi Boilers

  • Low-End Models: £500 – £1,000
  • Mid-Range Models: £1,000 – £1,500
  • High-End Models: £1,500 – £2,500

System Boilers

  • Low-End Models: £600 – £1,000
  • Mid-Range Models: £1,000 – £1,800
  • High-End Models: £1,800 – £3,000

Conventional Boilers

  • Low-End Models: £700 – £1,200
  • Mid-Range Models: £1,200 – £2,000
  • High-End Models: £2,000 – £4,000

Combi boiler installation repair in london

Let’s Heat is a top provider of combi boiler installation services in London, known for its outstanding customer service and skilled craftsmanship. They specialise in the newest energy-efficient combi boilers, ensuring your home stays warm, comfortable, and economical.

Our team of highly skilled engineers provides personalised solutions designed to meet your specific needs, ensuring a smooth installation process. With competitive pricing, prompt service, and a dedication to quality, Let’s Heat is your top choice for dependable and efficient combi boiler installations in London. Trust Let’s Heat for peace of mind and a cosy home year-round.

System boiler installation repair in london

Let’s Heat is a leading provider of system boiler installation services in London, renowned for exceptional quality and customer satisfaction. With a focus on advanced system boilers, Let’s Heat guarantees efficient and robust heating and hot water solutions for your home.

Our team of expert engineers provides tailored installations to address the specific needs of your property, ensuring maximum performance and durability. With clear pricing, fast service, and a commitment to excellence, Let’s Heat is the trusted name for system boiler installations in London. Enjoy exceptional heating solutions and comfort throughout your home with Let’s Heat.

Best Boiler Deals From Installers Near London

Let’s Heat is pleased to present the best boiler deals in London. Our exclusive offers feature discounts on a variety of high-efficiency combi and system boilers, helping you find the ideal solution for your home’s heating and hot water requirements.

With Let’s Heat, you get competitive pricing, expert installation, and extensive warranties. Our team of experienced engineers ensures a seamless, hassle-free process from beginning to end. Take advantage of our exclusive deals to upgrade your home’s heating system with confidence. Reach out to Let’s Heat today to discover our latest offers and enjoy top-notch boiler solutions at unbeatable prices in London.

Who Should You Trust for boiler installation repair in london?

For boiler installations in London, Let’s Heat is renowned for its trustworthiness and reliability. Our dedication to excellence is evident through our team of highly skilled engineers, who bring extensive experience to each project.

At Let’s Heat, we take pride in our transparent pricing, top-notch workmanship, and personalised service that prioritises your needs. We exclusively use high-quality, energy-efficient boilers from leading brands, ensuring durability and peace of mind. Trust us to handle your boiler installation with the highest level of professionalism and care, providing a warm and reliable home for years to come.

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Boiler replacement vs repair in London?

If you encounter problems with your boiler, Let’s Heat in London provides expert advice to help you choose between repair and replacement. Our skilled team evaluates your boiler’s condition and offers honest, professional recommendations suited to your needs.

Boiler Replacement:

If your boiler is outdated, inefficient, or prone to frequent breakdowns, replacing it could be the best choice. Newer models provide enhanced energy efficiency, lower running costs, and advanced features.

A new boiler can enhance performance, reduce energy bills, and minimise the need for repairs. Let’s Heat offers a selection of high-efficiency boilers at competitive prices, along with expert installation services. We manage everything from choosing the ideal model to installing it, ensuring minimal disruption and maximum comfort in your home.

Boiler Repair:

For newer or minor issues, repairing your boiler may be the most economical option. Our team swiftly identifies and resolves problems to restore your boiler’s functionality. Repairs can prolong your boiler’s lifespan and address specific issues without requiring a full replacement. Let’s Heat’s experienced engineers offer prompt and dependable repair services.

We perform comprehensive inspections to pinpoint the root cause of issues and carry out high-quality repairs to ensure your boiler runs efficiently. Whether you opt for repair or replacement, we guarantee excellent workmanship and customer satisfaction. As a trusted London-based company, we are well-acquainted with the unique needs and challenges of local homes.

Faq

Which is the best boiler in the UK?

The Worcester Bosch Greenstar series is often considered the best boiler range in the UK.

How much does a boiler cost in London?

A new boiler in London can cost between £1,500 to £4,000, including installation.

What is the most energy efficient boiler in the UK?

The Viessmann Vitodens 200-W is highly regarded for its energy efficiency.

How to choose a boiler in the UK?

Consider factors such as boiler type (combi, system, or conventional), your home size, energy efficiency ratings, and budget.

Who are the top 5 boiler manufacturers?

The top 5 boiler manufacturers are Worcester Bosch, Vaillant, Viessmann, Ideal Boilers, and Baxi.

Is Viessmann better than Worcester Bosch?

Both brands are highly rated, but Viessmann often edges out in energy efficiency and advanced technology.

How long does a UK boiler last?

A well-maintained boiler typically lasts around 10-15 years.

Should I replace my 30 year old boiler?

Yes, it’s advisable to replace a 30-year-old boiler due to efficiency, reliability, and safety concerns.

Which boiler lasts the longest?

Viessmann and Worcester Bosch boilers are known for their durability and longevity.

Which boiler is the cheapest to run?

Combi boilers are generally the cheapest to run due to their efficiency and lack of need for a hot water cylinder.

Which boiler has the highest efficiency?

The Viessmann Vitodens 200-W is noted for its high efficiency, achieving up to 98% efficiency in certain models.